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// Copyright 2021, 2022 Benjamin Barenblat
//
// Licensed under the Apache License, Version 2.0 (the "License"); you may not
// use this file except in compliance with the License. You may obtain a copy of
// the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations under
// the License.
// In-flight RPCs.
//
// Each of these classes represents an individual X RPC, possibly still in
// flight. Inspecting an instance will block until the RPC has completed.
#ifndef GLPLANET_SRC_X_RPC_H_
#define GLPLANET_SRC_X_RPC_H_
#include <xcb/xcb.h>
#include "src/x/types.h"
namespace x {
// An RPC that returns nothing.
//
// This class is thread-safe.
class VoidCompletion final {
public:
explicit VoidCompletion(xcb_connection_t* xcb,
xcb_void_cookie_t cookie) noexcept
: xcb_(xcb), cookie_(cookie) {}
VoidCompletion(const VoidCompletion&) noexcept = default;
VoidCompletion& operator=(const VoidCompletion&) noexcept = default;
VoidCompletion(VoidCompletion&&) noexcept = default;
VoidCompletion& operator=(VoidCompletion&&) noexcept = default;
// Blocks until the RPC completes and checks to make sure it was successful.
// Throws Error if it was not.
void Check() const&&;
private:
xcb_connection_t* xcb_;
xcb_void_cookie_t cookie_;
};
// An InternAtom RPC.
//
// This class is thread-safe.
class InternAtomCompletion final {
public:
explicit InternAtomCompletion(xcb_connection_t* xcb,
xcb_intern_atom_cookie_t cookie) noexcept
: xcb_(xcb), cookie_(cookie) {}
InternAtomCompletion(const InternAtomCompletion&) noexcept = default;
InternAtomCompletion& operator=(const InternAtomCompletion&) noexcept =
default;
InternAtomCompletion(InternAtomCompletion&&) noexcept = default;
InternAtomCompletion& operator=(InternAtomCompletion&&) noexcept = default;
// Blocks until the RPC completes, checks to make sure it was successful, and
// returns the atom. Throws Error if the RPC failed.
Id Get() const&&;
private:
xcb_connection_t* xcb_;
xcb_intern_atom_cookie_t cookie_;
};
} // namespace x
#endif // GLPLANET_SRC_X_RPC_H_
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